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Fits 2021-2022 FORD Superduty trucks with the Powerstroke Diesel engines. This set fits the 2020 Ford trucks with the “spin-off” or multi-turn diesel caps. This set also fits the 2023 Ford trucks with diesel pipes which are bare stainless steel inside.

CHECK CAREFULLY!

This is NOT compatible with the F150s, earlier model year trucks with the 1/4-turn style caps, or the 2023+ trucks with the diesel pipes painted black inside. If you purchase in error, please call to arrange an exchange.

Some customers report difficulty operating the caps or undesirable motion when installed on F450s. Please call customer service in case this happens to you.

 

Get a deal by buying both a Loc-Sure and a Spin-Loc at the same time! Each combo purchase comes with the Loc-Sure cap, the Spin-Loc cap and one pair of Secure Keys with complimentary stainless steel key ring. Both caps have natural venting. Additional keys can be purchased using the information from our Secure Keys page.

Loc-Sure/Spin-Loc Combo for 2021-22 FORD Diesel

Rating is 5.0 out of five stars based on 3 reviews
$170.00Price
Quantity

    Reviews

    Rated 5 out of 5 stars.
    Based on 3 reviews
    3 reviews
  • DaveApr 08
    Rated 5 out of 5 stars.
    Verified
    Awesome Caps!

    If you want peace of mind, knowing your fuel is safe from theft or contamination, BEM caps are a must have! The heavy duty design secures the $5 per gallon fuel, making theft much more problematic. Great product and highly recommended!

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  • J Farmer Mar 19
    Rated 5 out of 5 stars.
    Verified
    Solid product

    Overall product is good quality, expensive yes but it give you peace of mind that no one is getting to your fuel

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  • CharlesAug 01, 2025
    Rated 5 out of 5 stars.
    Verified
    F250 diesel + DEF locking caps

    Fits perfect - so happy now I have both my fuel lines locked up. I have a 60-gallon tank so only need to fill up like once a month. Very happy with the purchase and fit of these.

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